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Elemental Analysis of Wisdom Teeth by Atomic Spectroscopy Using Standard Additions. An Undergraduate Instrumental Analysis Laboratory Exercise

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Venda J. Porter , Patricia M. Sanft , Jennifer C. Dempich , Dana D. Dettmer , Angela E. Erickson , Nicole A. Dubauskie , Susan T. Myster , Emory H. Matts and Eugene T. Smith

Department of Chemistry, Hamline University, St. Paul, MN 55104-1284

J. Chem. Educ., 2002, 79 (9), p 1114

DOI: 10.1021/ed079p1114

Publication Date (Web): September 1, 2002

Section:

History, Education, and Documentation

Abstract

A laboratory exercise to be used in an undergraduate instrumental methods course is presented for the analysis of calcium, magnesium, strontium, and zinc in wisdom teeth by inductively coupled plasma–atomic emission (ICP–AES), and flame (FAA) and graphite furnace (GFAA) atomic absorption spectroscopy. In addition to exposing students to common spectroscopic instruments and reinforcing concepts taught in the classroom, the exercise demonstrates the practical application of detecting and quantifying analytes in wisdom teeth, a real-world sample. Detection limits and interferences associated with the various spectroscopic techniques are discussed. Standard additions, a technique commonly applied to account for interferences, and an error analysis associated with this technique were utilized in the analysis.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Atomic Spectroscopy

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